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Parthojit Chakraborty

PhD in Information and Communications Engineering with competence in Sensor Technology

Hi, and thanks for stopping by!

I am currently Specially Appointed Assistant Professor at Tokyo Institute of Technology, Japan. I am associated with the JST CREST project, “Multi-modal Information Carrier System Towards Early Detection of Parkinson’s Disease” where we are building the next generation of micro-electromechanical devices (MEMS). I am also serving as Advisor at Magnetic Square Co. Ltd. I have experience in R&D with both chemical and physical sensors in academic and industry settings. 

I received the B.E. degree from Jadavpur University, India in 2014 and the M.E. and PhD degrees from Tokyo Institute of Technology, Japan in 2017 and 2020 respectively. I did my PhD under Prof. Takamichi Nakamoto at Nakamoto Laboratory where I realized the electrochemical fabrication of atomic size gold metal based nanocomposites for gas sensing followed by optimization of sensor performance, data processing and analysis with multidimensional data. In the past I worked as Machine Learning Researcher at Fixstars Corporation, Digzyme Inc. and as Software Developer at Magnetic Square Co. Ltd.

Recent News

Research Experience

  • Tokyo Institute of Technology, Japan
    Nano Sensing Research Unit, Institute of Innovative Research
    (April 2022 - Present)
    ‍
    - Designed high-sensitivity MEMS capacitive sensor by fine-tuning IC layout design at 3 layers
    - Modeled and tested functionality of MEMS sensor based on physics principles using finite element analysis
    - Modelled transfer function of MEMS inertial module in MATLAB, Simulink to determine parameter for improving Q-factor of the output signal
  • Tokyo Institute of Technology, Japan
    Nakamoto Laboratory, Institute of Innovative Research
    (October 2020 - March 2022)

    - Fabricated gas sensors with partial selectivity towards sensor array by using multiple electrochemically modified polyaniline-atomic gold nanocomposites
    - Implemented analog front-end hardware protype with C++ embedded software for measuring electrochemical sensor signals with low latency
    - Improved class discriminability by extracting chemical descriptors using PCA, LDA, feature importance estimation
    - Published in high impact conferences and journals such as IEEE
  • Fixstars Corporation, Japan
    Software Solutions Division 2
    (January 2022 - March 2022)
    ‍
    - Accelerated software design time by implemented an automated approach for determination Non-negative Matrix Factorization components towards parts-based learning of anomaly in wafer manufacturing from its image data
    - Achieved swift software prototyping by generating artificial data of the order of 10,000 by replicating wafer manufacturing image data as image array and introducing gaussian noise
    - Predicted and isolated anomaly in data using soft clustering and lasso regression among other methods
  • Digzyme Inc., Japan
    (April 2020 - March 2022)

    - Prepared dataset of over 100,000 proteins from open-source BRENDA, UniProt, Protherm databases by web-scraping with API, SOAP, RDKit, Selenium
    - Executed classifier and regressor models for predicting proteins with above 80% accuracy by comparing performances learning models (RF, K-Means, SVM, AdaBoost, ANN) and hyper-parameter tuning (GridSearchCV)
    - Resolved class imbalance in dataset and improved model accuracy by 5% by implementing cost-sensitive learning and SMOTE technique
  • Magnetic Square Co. Ltd., Japan
    (April 2020 - March 2022)

    - Achieved hand-gesture recognition with 2K RAM microcontroller with above 88% accuracy through data-augmentation, data filtering binary classification in C++
    - Achieved categorical classification of fish image data with accuracy greater than 95% by implementing a convolutional neural network model with hyperparameter tuning
    - Minimized x-y position error touch panel hardware cursor by 60% by implementing using data filtering with Kalman, moving average, median and Savitzky-Golay filters
  • IMTEK, University of Freiburg, Germany
    Department of Microsystems Engineering
    (November 2019)

    - Hosts: Prof. Margit Zacharias and Dr. Sebastian Gutsch
  • Georgia Institute of Technology, USA
    School of Chemistry and Biochemistry
    (April 2017)

    - Hosts and Advisors: Prof. Jiri Janata & Dr. Mira Josowicz
  • Tokyo Medical & Dental University, Japan
    Institute of Biomaterials and Bioengineering
    (August 2016)

    - Host: Prof. Yuji Miyahara

Skills

  • Machine Learning & Data Science
    Scikit-learn, Tensorflow, Keras, PyTorch, JAX, CUDA, Julia, AWS, Google Analytics, Google Cloud Platform
  • Software Development
    Python, MATLAB, C/C++,  HTML, CSS, Socket programming, Websockets, AJAX, Javascript, JQuery, JTree
  • Embedded
    Raspberry Pi / Beaglebone /Arduino / STM32, Platform IO,  Virtual Machine (VMWare, VNC), VHDL / Verilog, FPGA (AlteraQuartus, Nios II, Lattice), PCB CAD (Eagle, KiCAD), LSI Design (Cadence Virtuoso, SX Meister), Linux,SSH, I2C, UART, SPI, GPIB, VISA
  • Coding Standards and Agile Tools
    Object Oriented Programming, Git, Atlassian, Trello, PEP8
  • Other skills that can be utilized
    - Technical Writing
    - Technical Presentation
    - Management Skills
    - Interpersonal Skills

Publications

Click to see full list here

Awards & Achievements

Patent - Odor Sensing Element, Japan Patent Office, Patent No. 6762029 (2020)
Travel award - Tonen International Scholarship Foundation (2019) - approx. $1,000
Full academic scholarship - Tonen  Foundation (2018) - approx. $53,400
Full academic scholarship - MEXT Scholar, Japanese Government (2018) - approx. $35,280
Award - Most Impressive Photo, Online Photo Contest, Tokyo Institute of Technology (2020)
Honorable Mention  (Rank 3) - Junction Tokyo 2019 Hackathon
Academic Excellence Award (Rank 1 - Mathematics) - Don Bosco School, New Delhi (2009)
Academic Excellence Award (Rank 1 - Physics) - Don Bosco School, New Delhi (2009)
School Music Band Captain - Don Bosco School, New Delhi (2007-2009)
Creative Writing Award - Don Bosco School, New Delhi (2007)

Blog

  • (2021) - My lecture at the Chemical Sensors track of IEEE Sensors Conference is on YouTube - click to see
  • (2016) - My piano performance of Bollywood love song "Tere Liye" at Tokyo Institute of Technology Alumni Meeting is on YouTube - click to see
  • (2014) - "Trailblazing" - my poem written for Jadavpur University Department Reunion - see page 23 of magazine
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